/*! @source http://purl.eligrey.com/github/Blob.js/blob/master/Blob.js */
(function (view) {
  view.URL = view.URL || view.webkitURL;
  if (view.Blob && view.URL) {
    try {
      new Blob;
      return
    } catch (e) {
    }
  }
  var BlobBuilder = view.BlobBuilder || view.WebKitBlobBuilder || view.MozBlobBuilder || (function (view) {
    var get_class = function (object) {
        return Object.prototype.toString.call(object).match(/^\[object\s(.*)\]$/)[1]
      }, FakeBlobBuilder = function BlobBuilder() {
        this.data = []
      }, FakeBlob = function Blob(data, type, encoding) {
        this.data = data;
        this.size = data.length;
        this.type = type;
        this.encoding = encoding
      }, FBB_proto = FakeBlobBuilder.prototype, FB_proto = FakeBlob.prototype, FileReaderSync = view.FileReaderSync,
      FileException = function (type) {
        this.code = this[this.name = type]
      },
      file_ex_codes = ("NOT_FOUND_ERR SECURITY_ERR ABORT_ERR NOT_READABLE_ERR ENCODING_ERR " + "NO_MODIFICATION_ALLOWED_ERR INVALID_STATE_ERR SYNTAX_ERR").split(" "),
      file_ex_code = file_ex_codes.length, real_URL = view.URL || view.webkitURL || view,
      real_create_object_URL = real_URL.createObjectURL, real_revoke_object_URL = real_URL.revokeObjectURL,
      URL = real_URL, btoa = view.btoa, atob = view.atob, ArrayBuffer = view.ArrayBuffer, Uint8Array = view.Uint8Array;
    FakeBlob.fake = FB_proto.fake = true;
    while (file_ex_code--) {
      FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1
    }
    if (!real_URL.createObjectURL) {
      URL = view.URL = {}
    }
    URL.createObjectURL = function (blob) {
      var type = blob.type, data_URI_header;
      if (type === null) {
        type = "application/octet-stream"
      }
      if (blob instanceof FakeBlob) {
        data_URI_header = "data:" + type;
        if (blob.encoding === "base64") {
          return data_URI_header + ";base64," + blob.data
        } else {
          if (blob.encoding === "URI") {
            return data_URI_header + "," + decodeURIComponent(blob.data)
          }
        }
        if (btoa) {
          return data_URI_header + ";base64," + btoa(blob.data)
        } else {
          return data_URI_header + "," + encodeURIComponent(blob.data)
        }
      } else {
        if (real_create_object_URL) {
          return real_create_object_URL.call(real_URL, blob)
        }
      }
    };
    URL.revokeObjectURL = function (object_URL) {
      if (object_URL.substring(0, 5) !== "data:" && real_revoke_object_URL) {
        real_revoke_object_URL.call(real_URL, object_URL)
      }
    };
    FBB_proto.append = function (data) {
      var bb = this.data;
      if (Uint8Array && (data instanceof ArrayBuffer || data instanceof Uint8Array)) {
        var str = "", buf = new Uint8Array(data), i = 0, buf_len = buf.length;
        for (; i < buf_len; i++) {
          str += String.fromCharCode(buf[i])
        }
        bb.push(str)
      } else {
        if (get_class(data) === "Blob" || get_class(data) === "File") {
          if (FileReaderSync) {
            var fr = new FileReaderSync;
            bb.push(fr.readAsBinaryString(data))
          } else {
            throw new FileException("NOT_READABLE_ERR")
          }
        } else {
          if (data instanceof FakeBlob) {
            if (data.encoding === "base64" && atob) {
              bb.push(atob(data.data))
            } else {
              if (data.encoding === "URI") {
                bb.push(decodeURIComponent(data.data))
              } else {
                if (data.encoding === "raw") {
                  bb.push(data.data)
                }
              }
            }
          } else {
            if (typeof data !== "string") {
              data += ""
            }
            bb.push(unescape(encodeURIComponent(data)))
          }
        }
      }
    };
    FBB_proto.getBlob = function (type) {
      if (!arguments.length) {
        type = null
      }
      return new FakeBlob(this.data.join(""), type, "raw")
    };
    FBB_proto.toString = function () {
      return "[object BlobBuilder]"
    };
    FB_proto.slice = function (start, end, type) {
      var args = arguments.length;
      if (args < 3) {
        type = null
      }
      return new FakeBlob(this.data.slice(start, args > 1 ? end : this.data.length), type, this.encoding)
    };
    FB_proto.toString = function () {
      return "[object Blob]"
    };
    FB_proto.close = function () {
      this.size = this.data.length = 0
    };
    return FakeBlobBuilder
  }(view));
  view.Blob = function Blob(blobParts, options) {
    var type = options ? (options.type || "") : "";
    var builder = new BlobBuilder();
    if (blobParts) {
      for (var i = 0, len = blobParts.length; i < len; i++) {
        builder.append(blobParts[i])
      }
    }
    return builder.getBlob(type)
  }
}(typeof self !== "undefined" && self || typeof window !== "undefined" && window || this.content || this));
